ELECTROCHEMICAL REACTOR, SUCH AS A FUEL CELL OR AN ELECTROLYZER, PROVIDED WITH A DEVICE FOR MEASURING A PARAMETER OF A GAS SPECIFIC TO THE OPERATION OF SAID REACTOR

摘要

An electrochemical reactor, such as a fuel cell stack or an electrolyser, comprises: a stack (22) of electrochemical cells (25), each of which comprises at least one electrode plate (108-1) having one face in electrical contact with an electrolyte; at least one manifold (24) connected to said face of each of the cells in an exchange circuit, for exchanging a gas with the outside of the stack; a sensor (11) sensitive to the composition of said gas in the circuit; and at least one member for monitoring or for controlling an operational condition of this reactor in response to the measurements by said sensor. The stack (22) of cells and the manifold (24) form a one-piece reactor body (15) that comprises at least one chamber (20) integrated into this body in communication with said manifold. The gas composition sensor (11) is mounted in said one-piece body and comprises a sensitive unit (30) exposed directly to the in situ concentration of a component of said gas in said chamber (20).